Journal ArticleDOI
Tenfold reduction of Brownian noise in high-reflectivity optical coatings
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TLDR
In this article, direct-bonded monocrystalline multilayers are used for optical interferometry, which exhibit both intrinsically low mechanical loss and high optical quality.Abstract:
Thermally induced fluctuations impose a fundamental limit on precision measurement. In optical interferometry, the current bounds of stability and sensitivity are dictated by the excess mechanical damping of the high-reflectivity coatings that comprise the cavity end mirrors. Over the last decade, the dissipation of these amorphous multilayer reflectors has at best been reduced by a factor of two. Here, we demonstrate a new paradigm in optical coating technology based on directbonded monocrystalline multilayers, which exhibit both intrinsically low mechanical loss and high optical quality.read more
Citations
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Journal ArticleDOI
Engineering spin squeezing in a 3D optical lattice with interacting spin-orbit-coupled fermions
Peiru He,Peiru He,Michael A. Perlin,Michael A. Perlin,Sean R. Muleady,Sean R. Muleady,Robert J. Lewis-Swan,Robert J. Lewis-Swan,Ross B. Hutson,Jun Ye,Ana Maria Rey,Ana Maria Rey +11 more
TL;DR: In this paper, a protocol that uses both interatomic interactions and laser-induced momentum kicks, normally two undesirable decoherence mechanisms in current 3D optical lattice clocks, was proposed to engineer metrologically useful entangled states.
Journal ArticleDOI
Single-ion, transportable optical atomic clocks
Marion Delehaye,Clément Lacroûte +1 more
TL;DR: For the past 15 years, tremendous progress within the fields of laser stabilization, optical frequency combs and atom cooling and trapping have allowed the realization of optical atomic clocks with....
Journal ArticleDOI
Evaluating the performance of the NPL femtosecond frequency combs: Agreement at the $10^{-21}$ level
TL;DR: In this paper, a series of comparisons between two independent femtosecond frequency comb systems at NPL, which were carried out in order to assess their systematic uncertainty, were conducted.
Journal ArticleDOI
Simple vibration insensitive cavity for laser stabilization at the 10^{-16} level
TL;DR: In this paper, the authors present the design and realization of two reference cavities for ultra-stable lasers addressing narrow transitions in mixed-species (115In+/172Yb+) Coulomb crystals.
Journal ArticleDOI
Silicon single-crystal cryogenic optical resonator.
Eugen Wiens,Qun-Feng Chen,I. Ernsting,Heiko Luckmann,Ulrich Rosowski,Alexander Nevsky,Stephan Schiller +6 more
TL;DR: The demonstration and characterization of a silicon optical resonator for laser frequency stabilization, operating in the deep cryogenic regime at temperatures as low as 1.5 K, indicate that this system should enable frequency stabilization of lasers at the low-10(-17) level.
References
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Journal ArticleDOI
Irreversibility and Generalized Noise
TL;DR: In this article, a relation between the generalized resistance and the generalized forces in linear dissipative systems is obtained, which forms the extension of the Nyquist relation for the voltage fluctuations in electrical impedances.
Journal ArticleDOI
LIGO: The Laser Interferometer Gravitational-Wave Observatory.
Alex Abramovici,W. E. Althouse,R. W. P. Drever,Yekta Gursel,Seiji Kawamura,F. J. Raab,David H. Shoemaker,L. Sievers,Robert Spero,Kip S. Thorne,R. E. Vogt,Rainer Weiss,S. E. Whitcomb,Michael E Zucker +13 more
TL;DR: The goal of the Laser Interferometer Gravitational-Wave Observatory (LIGO) Project is to detect and study astrophysical gravitational waves and use data from them for research in physics and astronomy.
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Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place
Till Rosenband,David Hume,Piet O. Schmidt,Chin-Wen Chou,A. Brusch,Luca Lorini,Windell H. Oskay,Robert E. Drullinger,Tara M. Fortier,Jason Stalnaker,Scott A. Diddams,William C. Swann,Nathan R. Newbury,Wayne M. Itano,David J. Wineland,J. C. Bergquist +15 more
TL;DR: Repeated measurements during the past year yield a preliminary constraint on the temporal variation of the fine-structure constant α of α ofbatchmode, a regime of operation for atomic clocks based on optical transitions, promising even higher performance.
Journal ArticleDOI
LIGO: The Laser Interferometer Gravitational-Wave Observatory
TL;DR: Laser Interferometric Gravitational-Wave Observatory (LIGO) as discussed by the authors is a project to detect and study gravitational waves of astrophysical origin, which holds the promise of testing general relativity in the strong-field regime, providing a new probe of exotic objects such as black hole and neutron stars, and uncovering unanticipated new astrophysics.
Journal ArticleDOI
LIGO: The laser interferometer gravitational-wave observatory
TL;DR: LIGO as discussed by the authors is a trio of extremely sensitive Michelson interferometers built to detect gravitational waves from space, and the results of their recent observations are described in detail.